Unscrupulous: Faking the website of WIKA China
Trademark pirates won’t even stop at faking a website in order to distribute counterfeit products via the internet. WIKA has now also been affected by such criminality – under the domain www.wika-wika.cn, a company from Shanghai faked the homepage of WIKA China.Faking the website was publicly denounced with Plagiarius disgraceful awardThe company’s Trademarks & Patents […]
Calibration / contamination control with a block and bleed valve
A block and bleed valve can be used to prevent flow of contamination from a device under test (DUT) to a pressure controlling calibrator. This procedure includes “exercising” and purging the DUT and the actual calibration. Your procedure may be different but the essential principal of preventing flow from the DUT to the controller can […]
Ex protection – The difference between the Zone and Division model
“ Unconditional is suitable for use in Zone 1, as well as for use in Class 1, Div 1.” This statement is heard or read again and again in the descriptions for products for use in hazardous areas. But what is the difference between Zone 1 and Class 1, Div 1? Let’s compare the Zone […]
High-accuracy moisture measurement in SF6 switchgear
Moisture measurement in SF6-insulated switchgear is essential. That?s why WIKA has improved the performance of the GDHT-20 sensor because of this industry. The transmitter, which also provides values for gas density, pressure and temperature, now measures the dew/frost point having an accuracy of �2 K.Moisture, along with density, is the crucial parameter for assessing the […]
What is the dissipation loss for a pressure transmitter?
The term ?dissipation loss? can be found in the info sheet for a pressure sensor or pressure transmitter. One needs this specification in order to be able to protect the pressure sensor from overheating.If a pressure sensor is operated in a hot environment, it is usually essential to limit its electrical power. If one neglects […]
Sport, games & fun
No year without corporate sports competitions – also in 2016. What counts, apart from the athletic challenge, are in particular taking part and the joined experience within a group. Companies from the WIKA Group gain top ranks in these events, for example WIKA Canada and Mensor, who start regularly in regional corporate challenges. WIKA even […]
Pressure measurement in precision: 50 years of Mensor
Without doubt, Mensor plays a prominent role in the world of electronic pressure measurement. This WIKA Group company is based in San Marcos (Texas) and it was founded precisely 50 years ago. Since then, time and again it has set new benchmarks in the precision instrument sector, among others, with pressure controllers.How it all beganWith […]
Connection diagram of PNP and NPN transistor outputs for electronic pressure switches
Manufacturers of electronic pressure switches often offer both PNP and NPN switching outputs. Here is a brief explanation how the two different outputs should be connected.In principle, both are bipolar transistors in which only the internal arrangement of the pn transitions differs. This is why the load must be connected differently to the transistor outputs.PNP […]
Refrigeration systems with higher energy efficiency through accurate pressure control
Due to the worldwide rising energy costs, the energy-efficient operation of refrigeration systems becomes a must. According to Sunny , more than 90% of the refrigeration systems worldwide are not yet equipped with continuous control.They have been optimized and set for a certain operating state/refrigeration capacity – which means that they operate outside the optimum […]
SIL pressure switch: Safety in tyre manufacturing
Numerous industrial processes have an inherently risky potential. Special pressure switches support the safety of individuals and the environment. Example: the vulcanisation of tyres for automobiles. To monitor this technique, leading manufacturers utilize the model MW switch from WIKA with SIL 2 rating.Why such a pressure switch is necessary for safety in this application is […]